Racism
The belief that each racial group possesses inherent characteristics, abilities, or qualities, and to thereby distinguish one race as inferior or superior to another race or races.
Racism is what you call when someone is violently against a type of race. Racism is present in every corner of the world. Two great men like Nelson Mandela and Martin Luther King spent most of their life trying to protest racism against African-Americans.
Even though there's still racism today, it's way better than decades ago thanks to men like Nelson Mandela and Martin Luther King and a lot more.
Yellow Peril (alternate names: Yellow Terror, Yellow Menace, Yellow Specter): The Yellow Peril is a racist color metaphor that depicts the peoples of East and Southeast Asia as an existential danger to the Western world.
Black Lives Matter

Since the tragic death of George Floyd, comic books have started to reflect the struggle of police brutality against African-Americans. DC Comics released a mural of its Black superheroes to celebrate Juneteenth.
Then it was announced that Milestone would officially return as Earth-M on February 26th 2021. An online sampler, Milestone Returns Zero, was released online for free at DC Fandome on September 12th 2020. The printed release date occurs on May 26th 2021 as Milestone Returns: Infinite Edition. It is revealed that Static's origin story was retcon. Instead of participating in the Big Bang gang war on Paris Island, Virgil Hawkins was participating in a Black Lives Matter protest in Dakota, where the police released experimental tear gas on the protesters and created Bang Babies.